Home / 8,079.20-11,129.28-6,752.48

Finding the Fourth Proportional to 8,079.20, 11,129.28 and 6,752.48

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Solution

The fourth proportional to 8,079.20, 11,129.28 and 6,752.48 is: 9,301.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,079.20 : 11,129.28 = 6,752.48 : x
  2. Step 2: Convert to fraction form
    8,079.20/11,129.28 = 6,752.48/x
  3. Step 3: Cross multiply
    8,079.20x = 11,129.28 × 6,752.48
  4. Step 4: Simplify right side
    8,079.20x = 75,150,240.61
  5. Step 5: Solve for x
    x = 75,150,240.61/8,079.20
  6. Step 6: Final answer
    x = 9,301.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.